In Croatia, Poštenik families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica area and in Koprivnica.
Prevalence
About 10 people with faimily name Poštenik live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in four Croatian counties, threee cities and four other places, mostly in Varazdin (<10), in Kutnjak (<10) and Rasinja (<10) in Koprivnica area, Sesvete (<5), and in Vinogradi Ludbreski (<5).
Outside Croatia
Family name Poštenik is present in this form only in Croatia.